The Freestyle Libre 2 and Freestyle Libre 3 are both continuous glucose monitoring (CGM) systems designed for people with diabetes. They are indicated for use in individuals aged 4 and older. Medicare coverage is available for both devices if their respective readers are used to review glucose data on certain days each month. The Freestyle Libre 2 and 3 have similar features, with the main difference being that the Freestyle Libre 3 offers optional real-time glucose alarms, while the Freestyle Libre 2 does not. Both devices have a sensor lifespan of 14 days and require a warm-up period of 60 minutes after application. The Freestyle Libre 3 has a smaller and lighter profile compared to the Freestyle Libre 2 and offers a longer transmission distance of up to 33 feet compared to 20 feet for the Freestyle Libre 2. The Freestyle Libre 2 can be used with a compatible mobile device through the Freestyle Libre 2 app, while the Freestyle Libre 3 can be used with a compatible mobile device through the Freestyle Libre 3 app.
Key Takeaways:
- The Freestyle Libre 2 and 3 are CGM systems for people with diabetes.
- Both devices have a 14-day sensor lifespan and require a 60-minute warm-up period.
- The main difference is that Freestyle Libre 3 offers optional real-time glucose alarms.
- Freestyle Libre 3 has a smaller profile and longer transmission distance compared to Freestyle Libre 2.
- Freestyle Libre 2 can be used with Freestyle Libre 2 app, while Freestyle Libre 3 can be used with Freestyle Libre 3 app.
Features of the Freestyle Libre 2
The Freestyle Libre 2 is a stand-alone CGM system that offers a range of features for individuals with diabetes. One of its key advantages is that it does not require calibration, providing users with convenience and ease of use. The sensor is worn on the back of the arm and has a lifespan of 14 days, providing continuous glucose monitoring throughout that period.
With the Freestyle Libre 2, users have the option to scan the sensor with a reader or a compatible mobile device using the Freestyle Libre 2 app. This allows for quick and easy access to glucose readings, making it convenient for users to monitor their blood sugar levels on the go. The app also provides additional features such as carb counting, insulin dose tracking, and exercise tracking, helping users to manage their diabetes effectively.
The Freestyle Libre 2 offers adjustable low and high glucose alarms, allowing users to set customized alarm thresholds within a certain range. This ensures that users are promptly alerted in case of any fluctuations in their blood sugar levels, enabling them to take immediate action. In some countries, the Freestyle Libre 2 is compatible with NovoPen® 6 and NovoPen Echo® Plus, providing seamless integration for individuals using these insulin pens.
Overall, the Freestyle Libre 2 provides accurate and reliable glucose readings without the need for frequent calibration. Its user-friendly features and customizable alarms make it a valuable tool for individuals with diabetes to effectively manage their condition.
Table: Comparison of Features between the Freestyle Libre 2 and Freestyle Libre 3
| Feature | Freestyle Libre 2 | Freestyle Libre 3 |
|---|---|---|
| Sensor Lifespan | 14 days | 14 days |
| Calibration Requirement | No | No |
| Glucose Alarms | Adjustable low and high alarms | Customizable low and high alarms |
| Compatibility with Mobile Devices | Freestyle Libre 2 app | Freestyle Libre 3 app |
| Integration with Insulin Pens | NovoPen® 6 and NovoPen Echo® Plus (in some countries) | myLife insulin pumps (in select countries) |
Features of the Freestyle Libre 3
The Freestyle Libre 3 offers several impressive features that make it a popular choice among individuals with diabetes. First and foremost, its compact and discreet design allows for comfortable wear on the back of the arm. Unlike the Freestyle Libre 2, the Freestyle Libre 3 does not require scanning with a reader or compatible mobile device. Instead, it transmits glucose data directly to a compatible mobile device using the Freestyle Libre 3 app. This real-time glucose monitoring provides users with up-to-date information without the need for manual scanning.
Additionally, the Freestyle Libre 3 introduces customizable low and high glucose alarms, allowing users to set alarm thresholds within a certain range. This feature provides flexibility and enables users to receive alerts when their glucose levels are outside their desired target range. The Freestyle Libre 3 also offers a longer transmission distance of up to 33 feet, compared to 20 feet for the Freestyle Libre 2. This extended range allows users greater freedom of movement without compromising the accuracy of their glucose readings.
Furthermore, the Freestyle Libre 3 is designed to be water-resistant and can withstand water submersion up to a depth of 3.2 feet for 30 minutes. This makes it suitable for use while swimming or engaging in water-based activities. The sensor lifespan of the Freestyle Libre 3 remains consistent with the Freestyle Libre 2, lasting for 14 days. Overall, the Freestyle Libre 3 offers a user-friendly experience with its advanced features and improved convenience.
| Features | Freestyle Libre 2 | Freestyle Libre 3 |
|---|---|---|
| Scanning Required | Yes | No |
| Real-Time Glucose Readings | No | Yes |
| Low/High Glucose Alarms | Adjustable | Customizable |
| Transmission Distance | 20 feet | 33 feet |
| Water-Resistance | No | Yes |
Performance Comparison
When comparing the performance of the Freestyle Libre 2 and Freestyle Libre 3, several factors come into play. One important aspect to consider is the Mean Absolute Relative Difference (MARD), which measures the difference between CGM readings and laboratory blood glucose measurements. The Freestyle Libre 2 has a MARD of 9.3%, while the Freestyle Libre 3 has a lower MARD of 7.6%. This indicates that the Freestyle Libre 3 provides slightly more accurate glucose readings compared to the Freestyle Libre 2.
While both devices offer accurate glucose monitoring, it is essential to note that no CGM system on the market can provide 100% reliable results. Variability in readings, especially during low glucose levels, can still occur. Therefore, it is recommended to confirm CGM results with fingerstick tests, particularly when making important treatment decisions.
Despite the small differences in accuracy, the improved performance of the Freestyle Libre 3 makes it a favorable option for many users. The lower MARD value indicates that it may offer more consistent and reliable glucose readings. However, individual preferences and needs should also be considered when choosing between the two devices.
Table: Performance Comparison of Freestyle Libre 2 and Freestyle Libre 3
| Device | Mean Absolute Relative Difference (MARD) |
|---|---|
| Freestyle Libre 2 | 9.3% |
| Freestyle Libre 3 | 7.6% |
While the Freestyle Libre 3 offers slightly better accuracy with its lower MARD value, it is important to remember that both devices provide reliable glucose monitoring. Users should make their decision based on other factors such as features, user experience, and cost, in addition to considering the performance comparison.
Price and Cost Comparison
The cost of the Freestyle Libre 2 and Freestyle Libre 3 varies depending on factors such as insurance coverage and pricing policies. In the United States, a pack of 2 Freestyle Libre 2 sensors costs around $170, while a pack of 2 Freestyle Libre 3 sensors costs around $150. It is important to note that these prices are for over-the-counter purchases and may vary. Many commercially insured individuals with type 1 diabetes pay between $0 to $75 per month for Freestyle Libre sensors, according to Walgreens. Eligible patients may also have access to discounts or assistance programs.
| Freestyle Libre 2 | Freestyle Libre 3 |
|---|---|
| $170 for a pack of 2 sensors | $150 for a pack of 2 sensors |
| $0 to $75 per month for commercially insured individuals | $0 to $75 per month for commercially insured individuals |
While the initial cost of the sensors may differ slightly, the ongoing cost of using the Freestyle Libre 2 and Freestyle Libre 3 is comparable for commercially insured individuals. It is worth noting that insurance coverage may vary, and out-of-pocket costs may differ based on individual plans.
In addition to the cost of the sensors, it is important to consider the cost of the respective readers or compatible mobile devices. These devices are necessary for reviewing glucose data and accessing the full functionality of the Freestyle Libre systems. It is recommended to check with insurance providers or healthcare professionals to determine coverage and potential out-of-pocket expenses for these devices.
Usability and User Experience
Both the Freestyle Libre 2 and Freestyle Libre 3 offer user-friendly experiences. The associated mobile apps, the Freestyle LibreLink app for the Freestyle Libre 2 and the Freestyle Libre 3 app for the Freestyle Libre 3, are well-designed with intuitive interfaces. Users can easily access glucose readings, daily curves, and other data through the apps.
The Freestyle LibreLink app allows users to share their data with up to 20 family members, carers, or friends, providing convenience and support. This feature enables a collaborative approach to diabetes management, enhancing communication and understanding among the user’s support network. The ability to easily share glucose data can be especially beneficial for parents of children with diabetes or caregivers of individuals who may require regular monitoring.
The small and discreet design of the Freestyle Libre 3 sensor makes it less noticeable and more comfortable to wear, while still providing accurate and timely glucose readings. This sleek profile contributes to an improved user experience, as individuals may feel more confident and at ease in their daily activities. The sensor’s waterproof capability also adds to its usability, allowing users to wear it while swimming up to a depth of 3.2 feet for 30 minutes without compromising accuracy or functionality.
In summary, both the Freestyle Libre 2 and Freestyle Libre 3 offer user-friendly interfaces and convenient features for diabetes management. The ability to access glucose readings and share data with others through intuitive mobile apps enhances usability and support. Furthermore, the discreet design of the Freestyle Libre 3 sensor and its waterproof capabilities contribute to a comfortable and seamless user experience. These features make both devices highly suitable options for individuals seeking effective and user-friendly continuous glucose monitoring systems.
Conclusion
After reviewing the features and performance of the Freestyle Libre 2 and Freestyle Libre 3, it is clear that both CGM systems offer valuable benefits for individuals with diabetes. The main difference between the two lies in their features and user experience.
The Freestyle Libre 2 requires scanning with a reader or compatible mobile device and provides glucose readings every 8 hours. It offers features such as carb counting, insulin dose tracking, and exercise tracking, making it a comprehensive and convenient option for diabetes management.
On the other hand, the Freestyle Libre 3 transmits glucose data directly to a compatible mobile device and provides real-time readings. Its smaller and more discreet design allows for a comfortable and less noticeable wear experience. This makes it a preferred choice for individuals who value convenience and discretion.
Ultimately, the decision between the Freestyle Libre 2 and 3 depends on individual preferences and needs. It is advisable to consult with a healthcare provider to determine which device aligns best with personal diabetes management goals and requirements.
FAQ
Are the Freestyle Libre 2 and Freestyle Libre 3 CGM systems indicated for use in children?
Yes, both the Freestyle Libre 2 and Freestyle Libre 3 are indicated for use in individuals aged 4 and older.
Does Medicare cover the Freestyle Libre 2 and Freestyle Libre 3?
Medicare coverage is available for both devices if their respective readers are used to review glucose data on certain days each month.
What is the main difference between the Freestyle Libre 2 and Freestyle Libre 3?
The main difference is that the Freestyle Libre 3 offers optional real-time glucose alarms, while the Freestyle Libre 2 does not.
How long does the sensor last for both devices?
Both the Freestyle Libre 2 and Freestyle Libre 3 have a sensor lifespan of 14 days.
Can the devices be used with a compatible mobile device?
Yes, the Freestyle Libre 2 can be used with a compatible mobile device through the Freestyle Libre 2 app, and the Freestyle Libre 3 can be used with a compatible mobile device through the Freestyle Libre 3 app.
Do the devices require calibration?
No, neither the Freestyle Libre 2 nor the Freestyle Libre 3 require calibration.
How accurate are the devices?
The Freestyle Libre 2 has a Mean Absolute Relative Difference (MARD) of 9.3%, while the Freestyle Libre 3 has a MARD of 7.6%. Both devices provide accurate glucose readings, but variability may occur, especially during low glucose levels.
Where should the devices be worn?
The Freestyle Libre 2 should be worn on the back of the arm, and the Freestyle Libre 3 is also designed to be worn on the back of the arm.
Are there any waterproof features?
The Freestyle Libre 3 can be worn while swimming up to a depth of 3.2 feet for 30 minutes.
What is the price range for the devices?
In the United States, a pack of 2 Freestyle Libre 2 sensors costs around $170, while a pack of 2 Freestyle Libre 3 sensors costs around $150. Prices may vary depending on insurance coverage and other factors.
Which device is more discreet to wear?
The Freestyle Libre 3 has a smaller and lighter profile compared to the Freestyle Libre 2, making it less noticeable and more comfortable to wear.
